Mason&#39;s platform for buildings.



I PATENTED JAN. 29, 1907. G.-J.' CLARK. MASON'S PLATFORM FOR BUILDINGS.

APPLICATION FILED JUNE 2. 1905- 2 0 construction, showing my 50 the outriggers, and each CHARLES J. omen, or ivEW YORK, N. Y.

IVHVIAI'IS'ONS PLATFORM FOR BUILDINGS.

1'0 all whom it may concern.-

Be it known that I, CHARLES J. CLARK, a citizen of the United States, and a resident and inhabitant of the borough of Manhattan,

q in the city, county, and State of New York,

have invented certain new and useful Improvements in Masons Platforms for Buildings, of which the following is a full and true description, reference being had to the acr companying drawings, which show a construction embodying my invention.

My invention relates to masons platforms, and is an improvement on the construction shown and described in Letters Patent N o.

673,384, granted to me for improvements in masons platforms for buildings.

The improvements consist in the use of flexible vertical supporting members, in the use of improved gripping devices for engag- 2o ing said flexible members, and in the new arrangement of scribed. x

In the accompanying drawings, Figure l is a erspective view of a building in the process improved platforms attached thereto. Fig. 2 is a longitudinal sectional View of one ofthe horizontal supporting members and shows the clamping devices-carried thereby; The middle part of parts, as will be hereinafter dethe member is shown broken away; Fig. 3 shows an enlarged end view of one of the out riggers with one of the vertical supporting Fig. 4 1s a detail view plates used to reinforce members attached. showing one of'the 3 5 the horizontal supporting members where they engage the vertical supports.

Similar reference-numerals designate the same parts throughout the several views.

1 designates a buildingiu the process of erection, comprising vertical beams 2 and floorbeams 3. Attached to the lloor beams 3 are Outriggers 4, which may be in any convenient number, and to which are attached vertical flexible supporting members 5. These members are flexible and may be rope, iron bars,

wire, and wire rope. in some cases I may use chains, andl do not desire to be limited to the use of any particular flexible support. Two of the members 5 are attached to each of ports carries horizontalsupports 6.

shown three horizontal supports attached to each pair of the flexible supports. However, it IS understood that this'number may be varied. In many cases two will be sufficient,

and in other cases three or more may be used.

Specification of Letters Patent;

Application filed June 2,1905. Serial No. 268,388.

pair of vertical supl have-j or may be drawn up by Patented Jan. 29, 1907.

shown the horizontal supports made in two parts 7 7, which are identical in' structure. The parts 7 near their ends and on their in nor sides are provided withreinforcing faceplates 8, having grooves 9 on their inner faces, which vertical supports;

11 designates bolts for use in drawing the parts together and causing them to frictionally engage or to elamp the flexible supports 5. I preferably employ two of these bolts foreach horizontal support and locate them on the inner side of the plates 8, so that the flexible members 8 may be readily removed from between the ends of the members 7.

iWith the arrangement shown by slightly loosening the bolts 11 the horizontal supporting members may be adjusted, and by further loosening these bolts the horizontal supports may be entirely removed.

The directions for using my improved platforms are as follows: When the framing of the'building has reached such aheight that it'is desirable to begin the facing-work, at,

the outriggers are secured in position as shown, and the flexible supports are then secured to thooutriggers. Assuming that two platforms are to be used at a time, two rows of horizontal supports will be clamped in place and the platforms placed on them. The worlnnen. platform to stand on and the upper one for protection against material falling from above. lVhen the work adjacent the lower platform is completed, the workmen goto the upper platform, and the lower-platform is passed up to them piece at a time. The

flexible supports render this last operation extremely simple. The pieces forming the lower platform may be oarriedthrough the adjacent windows or may be passed up by workmen ren'iaining on the lower platform the workmen on the upper platform, who may pull up the lower platform by means of,- the flexible supports. The lower platform one occupied by the workmen; Thisma be repeated as often as desired until the work .is completed.

I have shown my platforms attached to cooperate when engaging the will preferably use the lower is then placed over the platforms carried by Zhe exterior of a building. However,

for interior work, and I do not desire to limit myself to the use of the device in any particular location nor to the use of it for masons only, since it is obvious that it may be'used by other workmen'to great advan- INhile I have illustrated and described one form of my invention, I am aware that it may assume different forms, and I wish to include in my invention all such changes in form and detail as are obviousto one skilled in the art.

What I claim is 1. In a device of the kind described, ilexi ble supports, a series of horizontal supports carried thereby, eaclr. comprising two members, bolts adapted to clamp the flexible supports between the said two members, said it is I bolts being spaced bvious that in some cases it may be used tween the flexible l l l 1 i l l l on the two members bedescribed.

2. In a device of the carried thereby, each comprising two members having reinforced portions at their ends adapted to engage the flexible supports, bolts adapted to clamp tween. the reinforced portions at the ends of the horizontal members, said bolts being located between the flexible supports, substantially as described.

In witness whereof I have hereunto signed my name this 29th day of May, 1905.

CHARLES J. CLARK;

In presence of WALTER S. JONES, WILLIAM H. DAVIS.

supports, substantially as the flexible supports be kind described, flQXI-r ble supports, a series of horizontal supports 

